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WO2014126219A1 - Ｘ線診断装置 - Google Patents

Ｘ線診断装置 Download PDF

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Publication number
WO2014126219A1
WO2014126219A1 PCT/JP2014/053532 JP2014053532W WO2014126219A1 WO 2014126219 A1 WO2014126219 A1 WO 2014126219A1 JP 2014053532 W JP2014053532 W JP 2014053532W WO 2014126219 A1 WO2014126219 A1 WO 2014126219A1
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WO
WIPO (PCT)
Prior art keywords
user
unit
sight
line
ray
Prior art date
Application number
PCT/JP2014/053532
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
材木　隆二
Original Assignee
株式会社 東芝
東芝メディカルシステムズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 東芝, 東芝メディカルシステムズ株式会社 filed Critical 株式会社 東芝
Priority to CN201480008831.1A priority Critical patent/CN104994787B/zh
Publication of WO2014126219A1 publication Critical patent/WO2014126219A1/ja
Priority to US14/823,550 priority patent/US9968320B2/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/46—Arrangements for interfacing with the operator or the patient
    • A61B6/467—Arrangements for interfacing with the operator or the patient characterised by special input means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/022—Stereoscopic imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
    • A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/46—Arrangements for interfacing with the operator or the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/46—Arrangements for interfacing with the operator or the patient
    • A61B6/461—Displaying means of special interest
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/545—Control of apparatus or devices for radiation diagnosis involving automatic set-up of acquisition parameters

Definitions

  • Embodiments of the present invention relate to an X-ray diagnostic apparatus.
  • image stereoscopic technique that enables a left-eye image and a right-eye image with an angle difference to be displayed on a monitor so that the image can be viewed stereoscopically.
  • Image stereoscopic viewing allows the user to easily grasp the object's front-rear relationship and surface roughness information that was difficult to understand on a normal two-dimensional display.
  • image stereoscopic technology has been applied to the medical field. For example, a left-eye image and a right-eye image for stereoscopically viewing a subject from a specific direction are collected in advance, and the subject is related to the subject. By interpreting the stereoscopic video, the user can grasp in detail the positional relationship between the organs and blood vessels around the subject.
  • the user may want to stereoscopically view the subject from other directions.
  • the user needs to reset the photographing angle by inputting a direction in which the user wants to view stereoscopically.
  • the above-described shooting angle setting operation by the user is a complicated operation. Therefore, by collecting a plurality of images in advance so as to cope with stereoscopic vision from a plurality of directions of the subject, it is possible to easily interpret a stereoscopic video image from other directions with respect to the subject. .
  • a plurality of images are collected by an X-ray imaging apparatus or the like, there is a problem that the exposure dose of the subject increases.
  • the purpose is to provide an X-ray diagnostic apparatus that can improve work efficiency while suppressing the exposure dose in diagnosis and treatment of a subject.
  • the X-ray diagnostic apparatus includes an X-ray generation unit that generates X-rays, an X-ray detection unit that detects X-rays generated from the X-ray generation unit and transmitted through a subject, and the X-ray generation A holding unit that holds the X-ray detection unit and the X-ray detection unit facing each other, a display unit that displays an X-ray image of the subject based on an output of the X-ray detection unit, and the display unit A position specifying unit that specifies the position of the face of the user who is visually recognizing, and a moving unit that moves the holding unit to a shooting position corresponding to the position of the specified user's face.
  • FIG. 1 is a block diagram showing an example of the configuration of the X-ray diagnostic apparatus according to this embodiment.
  • FIG. 2 is a diagram showing an appearance of the gantry of the X-ray diagnostic apparatus according to the present embodiment.
  • FIG. 3 is an explanatory diagram for explaining the user movement displacement.
  • FIG. 4A is a diagram illustrating a reference user position in the examination room coordinate system.
  • FIG. 4B is an explanatory diagram for describing a shooting angle set corresponding to the reference user position.
  • FIG. 4C is a diagram illustrating the user position after movement from the reference user position in the examination room coordinate system.
  • FIG. 4D is an explanatory diagram for describing a shooting angle set corresponding to the user position after movement.
  • FIG. 4A is a diagram illustrating a reference user position in the examination room coordinate system.
  • FIG. 4B is an explanatory diagram for describing a shooting angle set corresponding to the reference user position.
  • FIG. 4C is a diagram illustrating the user position after
  • FIG. 5 is a flowchart showing an example of a series of processes using the X-ray diagnostic apparatus according to the present embodiment.
  • FIG. 6 is a diagram illustrating a plurality of lines of sight set with respect to the stereoscopic target position.
  • FIG. 7 is a diagram corresponding to FIG. 6 and showing the screen transition of the display unit during the line-of-sight switching operation.
  • FIG. 1 is a block diagram showing an example of the configuration of the X-ray diagnostic apparatus 1 according to this embodiment.
  • the X-ray diagnostic apparatus 1 includes a C-arm 11, a C-arm support mechanism 12, a bed 13, a top plate 14, an X-ray generator 15, and a high voltage generator 16.
  • the gantry unit of the X-ray diagnostic apparatus 1 includes a C-arm 11, a C-arm support mechanism 12, a bed 13, and a top plate 14.
  • the C-arm support mechanism 12 supports the C-arm 11 rotatably.
  • the C-shaped arm 11 holds the X-ray generator 15 at one end thereof.
  • the X-ray generator 15 is a vacuum tube that generates X-rays.
  • the X-ray generator 15 generates X-rays when a high voltage (tube voltage) is applied from the high voltage generator 16.
  • the X-ray generator 15 has a radiation window for emitting generated X-rays.
  • An X-ray diaphragm 17 is attached to the radiation window of the X-ray generator 15.
  • the X-ray diaphragm 17 is a pyramid limiter that can adjust the X-ray irradiation field on the detection surface of the X-ray detector 18. By adjusting the X-ray irradiation field by the X-ray diaphragm 17, unnecessary exposure to the subject can be reduced.
  • the C-arm 11 holds the X-ray detection unit 18 at the other end so as to face the X-ray generation unit 15.
  • the X-ray detection unit 18 has a plurality of X-ray detection elements. The plurality of X-ray detection elements are arranged in a two-dimensional array.
  • the two-dimensional array detector is called an FPD (Flat Panel Display).
  • Each element of the FPD detects X-rays emitted from the X-ray generator 15 and transmitted through the subject. Each element of the FPD outputs an electrical signal corresponding to the detected X-ray intensity.
  • a line connecting the focal point of the irradiation window of the X-ray generation unit 15 and the center position of the X-ray detection surface of the X-ray detection unit 18 is referred to as an imaging axis (fifth rotation axis).
  • the rotation of the X-ray detection unit 18 around the fifth rotation axis determines the top and bottom of the captured image. Note that the top, bottom, left, and right of the image can be changed as appropriate by changing the method of reading out electrical signals from each element of the X-ray detector 18.
  • the C-arm support mechanism 12 may be either a ceiling-suspended type that holds the C-shaped arm 11 suspended from the ceiling, or a floor-mounted type that holds the C-shaped arm 11 with a floor-mounted mechanism. In this embodiment, a floor-standing type will be described as an example.
  • the C-arm support mechanism 12 includes a floor turning arm 121, a stand 122, and an arm holder 123.
  • the floor turning arm 121 is provided on the floor surface at one end so as to be turnable around the first rotation axis.
  • a stand 122 is supported so as to be rotatable around the second rotation axis.
  • the first and second rotation axes are substantially parallel to the orthogonal axis.
  • An arm holder 123 is supported on the stand 122 so as to be rotatable about the third rotation axis.
  • the third rotation axis is an axis substantially orthogonal to the orthogonal axis.
  • the arm holder 123 supports the C-shaped arm 11 so as to be rotatable (slidably rotated) in an arc along the shape of the C-shaped arm 11.
  • the rotation axis of this slide rotation is called the fourth rotation axis.
  • the C-arm support mechanism 12 may support the C-arm 11 so as to be movable in a major axis direction and a minor axis direction, which will be described later.
  • the X-ray generation unit 15 and the X-ray detection unit 18 are held by the C-arm 11 and the C-arm 11 is rotatably supported by the C-arm support mechanism 12.
  • other support mechanisms may be used as long as the X-ray generation unit 15 and the X-ray detection unit 18 can be held so as to face each other.
  • the C-arm 11 and the C-arm support mechanism 12 are replaced by a first holding unit that rotatably holds the X-ray generation unit 15 and a second holding unit that rotatably holds the X-ray detection unit 18.
  • the first holding unit has a mechanism placed on the floor
  • the second holding unit has a mechanism suspended from the ceiling.
  • the X-ray generation unit 15 and the X-ray detection unit 18 are held in a facing direction by the first holding unit and the second holding unit. Then, the rotation operation of the first holding unit and the rotation operation of the second holding unit are controlled to be synchronized, for example, so that continuous X-ray imaging is possible.
  • a bed 13 and a top plate 14 are arranged.
  • the bed 13 supports the top plate 14 on which the subject is placed so as to be movable with respect to three orthogonal axes.
  • the three orthogonal axes are defined by, for example, a short axis of the top plate 14, a long axis of the top plate 14, and an orthogonal axis orthogonal to the short axis and the long axis.
  • the direction along the major axis of the top plate 14 is referred to as the major axis direction.
  • a direction along the short axis of the top plate 14 is referred to as a short axis direction.
  • a direction along the orthogonal axis is referred to as an orthogonal axis direction.
  • the moving unit 19 independently rotates the C-arm 11 and the C-arm support mechanism 12 (in addition to the holding unit) around the first to fifth rotation axes according to control by the imaging control unit 25 described later. Further, the moving unit 19 slides the top plate 14 in the major axis direction or the minor axis direction and moves it up and down in the orthogonal axis direction according to control by the imaging control unit 25 described later. In addition, the moving unit 19 uses the top plate 14 to tilt the top plate 14 with respect to the installation surface of the bed 13 with an axis parallel to at least one of the major axis direction and the minor axis direction as a rotation axis. Rotate and move.
  • the slide movement, the up-and-down movement, and the rotational movement are collectively referred to as movement.
  • the input unit 20 functions as an interface for inputting instruction information from the user to the X-ray diagnostic apparatus 1.
  • input devices such as a mouse, a keyboard, a trackball, a touch panel, and buttons can be used as appropriate.
  • the instruction information includes an instruction to move the C-arm 11, an instruction to start X-ray imaging, an instruction to start an imaging angle setting process, an instruction to set an imaging condition, an instruction to set a reference line of sight, and the like.
  • the input unit 20 includes an operation console for the user to move the C-arm 11 and the C-arm support mechanism 12.
  • the operation console includes, for example, a button, a handle, a trackball, and the like for independently rotating the C-arm 11 around the plurality of rotation axes.
  • the input unit 20 includes a switch (hereinafter referred to as an imaging switch) that triggers the start of X-ray imaging by the X-ray diagnostic apparatus 1.
  • the photographing switch is typically a foot switch.
  • the imaging control unit 25 described later controls each unit in order to start X-ray imaging when the imaging switch is pressed.
  • the input unit 20 includes a switch (hereinafter referred to as a setting switch) that triggers the start of an imaging angle setting process described later by the X-ray diagnostic apparatus 1.
  • the imaging control unit 25 described later executes an imaging angle setting process described later by the X-ray diagnostic apparatus 1 when the setting switch is pressed.
  • the setting switch may be shared with the photographing switch (hereinafter referred to as a common switch).
  • the imaging control unit 25 controls each unit in order to automatically start X-ray imaging after performing an imaging angle setting process described later when the shared switch is pressed.
  • X-ray imaging conditions include conditions such as tube current value, tube voltage value, and imaging time, for example.
  • the shooting conditions are input in accordance with, for example, a user operation on a shooting condition setting support screen displayed on the display unit 32 described later.
  • a shooting condition setting support screen displayed on the display unit 32 described later.
  • an input field for the user to input a plurality of parameters respectively corresponding to the above-described plurality of conditions is displayed.
  • the line of sight is defined by a three-dimensional object position, a line-of-sight direction, and a display direction.
  • the stereoscopic target position is information for determining the center position of the subject that the user wants to stereoscopically view. In the case of stereoscopic viewing by the intersection method, the stereoscopic target position overlaps with the position of the convergence point where the line of sight of the right eye and the line of sight of the left eye intersect.
  • the line-of-sight direction is information for determining the direction of viewing the stereoscopic target position.
  • the display direction is information for determining the up / down / left / right direction of the subject when the stereoscopic target position is viewed from the line-of-sight direction.
  • the video is a stereoscopic image related to the subject when the stereoscopic target position is viewed from the line of sight, and the center position is the stereoscopic target position.
  • the top, bottom, left and right of the stereoscopic video correspond to the top, bottom, left and right defined by the display orientation.
  • the reference line of sight indicates the line of sight in a series of treatments on the subject.
  • the reference line of sight is preferably defined by the position of the subject to be most watched, the direction in which the position is viewed, and the top, bottom, left, and right of the image.
  • the reference line of sight is input in accordance with a user operation on a line-of-sight setting image displayed on the display unit 32 described later, for example.
  • the line-of-sight setting image is a 3D image relating to a reconstructed subject based on data of a plurality of X-ray images captured by the X-ray diagnostic apparatus 1.
  • the user can input the stereoscopic target position, the line-of-sight direction, and the display direction by operating the 3D image displayed on the display unit 32 with the mouse of the input unit 20 or the like. Specifically, the user can input a three-dimensional target position by clicking a specific operation, for example, a mouse on the line-of-sight setting image. Further, the user can input the line-of-sight direction and the display direction by rotating or moving the line-of-sight setting image with a mouse.
  • the line-of-sight direction corresponds to the direction of viewing the line-of-sight setting image being displayed.
  • the display orientation (up / down / left / right of the stereoscopic image) corresponds to up / down / left / right of the line-of-sight setting image being displayed.
  • the line-of-sight setting image is a 3D image relating to the subject collected by the X-ray diagnostic apparatus 1. Accordingly, the X-ray diagnostic apparatus 1 can set the imaging position of the patient placed on the top board 14 according to the stereoscopic target position, the line-of-sight direction, and the display direction set on the line-of-sight setting image. Thereby, the user can set a reference line of sight.
  • the line-of-sight setting image is not limited to the above-described image.
  • the line-of-sight setting image may be a plurality of 2D images taken by the X-ray diagnostic apparatus 1 relating to the subject.
  • the user designates the three-dimensional target position in the first plane on the 2D image of the subject related to the first plane.
  • the 3D target position in the second plane is designated on the 2D image of the subject related to the second plane that is different from the first plane.
  • a stereoscopic target position is determined by a user operation on two 2D images having different planes.
  • the line-of-sight direction and the display direction are determined, for example, by a user operation (such as image rotation) of the 2D image of the subject corresponding to the first plane or the 2D image of the subject corresponding to the second plane. With the above operation, the user can set the reference line of sight.
  • the part of the patient placed on the top 14 is a top plate coordinate system with a predetermined position of the top 14 as the origin. Can be identified. Therefore, the line-of-sight setting image may be a human body model image imitating a human body.
  • the 3D image of the line-of-sight setting image may be an image reconstructed based on volume data collected by another modality, for example, an X-ray CT (Computed Tomography) apparatus.
  • X-ray CT Computed Tomography
  • the reference line of sight may be set according to the positions of the C-arm 11 and the C-arm support mechanism 12 moved to the reference line of sight. Specifically, the user moves the fifth rotation axis to the position of the reference line of sight by operating the input unit 20. The user can set the reference line of sight by pressing a button or the like for setting the reference line of sight.
  • the angle detection unit 21 detects five rotation angles corresponding to the first to fifth rotation axes, respectively.
  • the angle detection unit 21 detects five rotation angles when the button for setting the reference line of sight of the input unit 20 is pressed. Then, a reference line of sight is set based on the detected five rotation angles.
  • the position specifying unit 22 specifies the user movement displacement and the reference user parallax.
  • the user movement displacement is a parameter indicating how much the user's face has moved in which direction from the reference position.
  • the reference position is, for example, the position of the face when the user stands at a position where the user mainly browses the display unit 32.
  • the position where the display unit 32 is mainly viewed corresponds to, for example, a position where the user actually performs a procedure on the subject.
  • the position specifying unit 22 specifies the position of the user's face (hereinafter simply referred to as the user position).
  • the user position represents the position of the feature point of the user's face, and is, for example, the midpoint of a straight line connecting the right eye pupil position and the left eye pupil position.
  • the position specifying unit 22 specifies a user position by detecting facial features such as eyes, nose and mouth by threshold processing for an image relating to the user taken by a camera or the like.
  • the device such as a camera may be an external device.
  • the position specifying unit 22 inputs an image relating to the user input from the external device.
  • the position specifying unit 22 sets the reference user position when a button related to the setting of the reference user position of the input unit 20 is pressed.
  • the position specifying unit 22 may set the reference user position in response to a specific gesture operation by the user.
  • the gesture motion can be detected by a device such as a camera.
  • the gesture motion is preferably a motion that can be easily performed even by a user who is performing a procedure such as “raise his hand” or “shake his / her neck left or right”.
  • the reference user position can be appropriately changed by the gesture operation and the operation of the input unit 20 even before and during the procedure. For example, the user moves the display unit 32 to a mainly viewing position and presses a button related to the setting of the reference user position or performs a gesture operation. Then, the position specifying unit 22 specifies the user position at that time, and the reference user position is set.
  • FIG. 3 is an explanatory diagram for explaining the user movement displacement.
  • the coordinate system is an examination room coordinate system with the display center position O as the origin. Further, the axis along the major axis of the display unit 32 is the X axis, the axis along the minor axis of the display unit 32 is the Y axis, the axis passing through the display center position O, and the axis perpendicular to the display screen of the display unit 32 is the Z axis.
  • P0 is a reference user position. P1 is the user position after moving from the reference user position. It is assumed that the coordinates (x0, y0, z0) of the reference user position P0 are known in advance.
  • the position specifying unit 22 specifies the user position P1 (x1, y1, z1) after the movement in order to specify the user movement displacement. Then, the user movement displacement is specified based on the coordinates (x0, y0, z0) of the reference user position P0 and the coordinates (x1, y1, z1) of the user position P1 after the movement.
  • the user movement displacement is defined as a user movement angle from the reference user position with respect to the display center position O.
  • a straight line connecting the reference user position P0 and the display center position O is one side of the corner
  • a straight line connecting the user position P1 and the display center position O is another side of the corner
  • the display center position O is The angle that is the vertex of the corner.
  • the movement angle is represented by a component of the movement angle on the XZ plane (hereinafter referred to as a horizontal angle) ⁇ and a component of the movement angle on the YZ plane (hereinafter referred to as a vertical angle) ⁇ .
  • the position specifying unit 22 specifies the user movement displacement based on the reference user position and the moved user position. The above is the description of FIG.
  • the reference user parallax is the parallax of the user who is viewing the display unit 32 at the reference user position.
  • the three-dimensional target position is displayed at the display center position of the display unit 32. Therefore, the position specifying unit 22 specifies the reference user parallax based on the distance from the display center position to the reference user position and the distance between the pupils of the user at the reference user position (hereinafter referred to as the reference pupil distance). To do. For example, calculation such as trigonometry is used to specify the parallax.
  • the interpupillary distance is the distance between the right eye pupil position and the left eye pupil position of the user.
  • the reference user parallax may be input by the user via the input unit 20.
  • the position specifying unit 22 includes a device such as a camera for specifying the user movement displacement and the reference user parallax.
  • the device may be another device as long as the user position and the reference inter-pupil distance can be specified.
  • the device may be an infrared sensor, an optical sensor, or the like.
  • the user position is the midpoint of a straight line connecting the right eye pupil position and the left eye pupil position.
  • the position specifying unit 22 can specify how much the user's face has moved.
  • the user position is not limited to the above position.
  • the user position may be the position of another part of the face such as the position of the mouth and the position of the nose, or the position of a marker attached to the face.
  • one of the set of the light receiver and the projector of the optical sensor is attached to the user and the other is attached to the display unit 32, and the position specifying unit 22 specifies the user movement displacement based on the output of the optical sensor. May be.
  • the data related to the reference user position and the reference user parallax may be stored in the storage unit 28 described later by the control unit 30 along with additional information such as user information and inspection information.
  • the reference user position and the reference user parallax are specified by the position specifying unit 22.
  • the reference user position may be determined in advance depending on the type of procedure.
  • the reference user position and the reference interpupillary distance may be determined depending on the user who is in charge of the procedure. Therefore, the reference user position and the reference interpupillary distance may be appropriately selected from a user information database stored in the storage unit 28 described later in accordance with a user instruction.
  • the user movement displacement specifying process by the position specifying unit 22 is executed in conjunction with a shooting angle setting process to be described later.
  • the position specifying unit 22 transmits the specified user movement displacement data to the shooting position setting unit 23.
  • the imaging condition setting unit 24 sets X-ray imaging conditions based on the X-ray imaging conditions input by the user.
  • the photographing position setting unit 23 sets a line of sight and a photographing angle set.
  • the shooting position setting unit 23 sets a shooting angle set according to the reference line of sight input by the user.
  • the shooting angle set has a left-eye shooting angle and a right-eye shooting angle.
  • the line-of-sight angle corresponding to the line-of-sight direction is, for example, with the three-dimensional target position as the origin, the axis parallel to the short axis of the top plate 14 as the X axis, and the axis along the direction orthogonal to the top plate 14 surface as the Y axis
  • the angle formed with the X axis and the angle formed with the Y axis when an axis parallel to the major axis of 14 is defined as the Z axis.
  • the imaging position setting unit 23 resets the line of sight of the subject based on the line of sight corresponding to the image set being displayed on the display unit 32 and the user movement displacement. Then, an imaging angle set is set according to the reset line of sight. Detailed description regarding the setting process of the shooting angle set by the shooting position setting unit 23 will be described later.
  • the shooting position setting unit 23 transmits the set shooting angle set data to the shooting control unit 25 and the image selection unit 29.
  • the imaging control unit 25 controls each unit related to X-ray imaging. Specifically, the high voltage generator 16 is controlled in accordance with the X-ray imaging conditions set by the imaging condition setting unit 24. Further, the imaging control unit 25 controls the moving unit 19 according to the imaging angle set set by the imaging condition setting unit 24. At this time, the imaging control unit 25 executes the X-ray imaging operation in the imaging angle set by controlling the X-ray detection unit 18 together with the control of the high voltage generation unit 16 and the moving unit 19. Then, each operation of the storage unit 28, the image generation unit 27, the preprocessing unit 26, and the like is controlled in synchronization with the X-ray imaging operation.
  • the preprocessing unit 26 performs preprocessing on the electric signal output from the X-ray detection unit 18.
  • the preprocessing includes, for example, various correction processes, amplification processes, A / D conversion processes, and the like.
  • the image generation unit 27 generates X-ray image data based on the electrical signal subjected to the preprocessing. Specifically, the image generation unit 27 includes left-eye image data and right-eye image data corresponding to the left-eye imaging angle, right-eye imaging angle, and (imaging angle set) (hereinafter, also referred to as an image set). Call).
  • the pixel value assigned to each pixel constituting the X-ray image is a value corresponding to the X-ray attenuation coefficient related to the substance on the X-ray transmission path.
  • the storage unit 28 is a semiconductor storage device such as a flash SSD (Solid State Disk) that is a semiconductor storage element, an HDD (Hard Desk Drive), or the like.
  • the storage unit 28 stores the data of the plurality of image sets generated by the image generation unit 27 together with the data relating to the corresponding line-of-sight angle and imaging angle set according to the control by the control unit 30. Further, the storage unit 28 stores, for example, X-ray imaging condition data, X-ray imaging angle condition data, inter-pupil distance data, and user information database data other than data related to the image set.
  • the user information database is a correspondence table in which a plurality of inter-pupil distances and a plurality of reference user positions are associated with a plurality of user IDs, respectively.
  • the storage unit 28 may include a plurality of correspondence tables according to the type of procedure.
  • the image selection unit 29 selects an image set to be displayed on the display unit 32 described later from a plurality of image sets stored in the storage unit 28 described later based on the shooting angle set set by the shooting position setting unit 23.
  • the image selection unit 29 transmits a signal indicating the start of shooting to the shooting control unit 25. Note that ON / OFF of the image set selection processing from the storage unit 28 by the image selection unit 29 can be appropriately changed according to a user instruction.
  • the control unit 30 includes a CPU (Central Processing Unit) and a memory circuit.
  • the control unit 30 receives the instruction information input via the input unit 20 and temporarily stores the memory circuit.
  • the control unit 30 controls each unit of the X-ray diagnostic apparatus 1 based on the input information.
  • the display control unit 31 displays the image set selected by the image selection unit 29 on the display unit 32 described later so that the user can stereoscopically view at the reference user position.
  • the display control unit 31 transmits a video signal obtained by dividing the left-eye image and the right-eye image vertically into strips to the display unit 32.
  • the display unit 32 displays the left-eye image and the right-eye image that are vertically divided into strips so as to be alternately arranged.
  • the divided left-eye images and right-eye images are displayed side by side so as to alternate.
  • the display unit 32 has a lenticular lens on the display surface.
  • the lenticular lens is a lens that changes the position where the line of sight reaches depending on the position viewed by the user. By adjusting the arrangement of the lenticular lenses, the right eye can see the right eye image and the left eye can see only the left eye image.
  • the display control unit 31 transmits the right-eye image signal to the display unit 32 after the left-eye image signal within one frame synchronization period.
  • the display unit 32 displays an image based on the transmitted image signal.
  • the user wears liquid crystal shutter glasses and looks at the display unit 32.
  • the liquid crystal shutter alternately blocks the left and right fields of view in synchronization with the display operation by the display unit 32. Since the shutter of the eyeglasses opens and closes completely in synchronization with the two images, the right eye image and the left eye only the left eye image are visible, so that stereoscopic viewing is possible.
  • the display control unit 31 and the display unit 32 of the present embodiment have been described by taking two stereoscopic viewing methods as an example, but the present embodiment can be applied to any stereoscopic viewing method using parallax. The present embodiment can also be applied to a stereoscopic method that can use multiple parallaxes.
  • the imaging angle setting function includes the line of sight corresponding to the image set being displayed on the display unit 32 by the imaging position setting unit 23 of the X-ray diagnostic apparatus 1 according to the present embodiment, and the user movement displacement specified by the position specifying unit 22. This is a function for resetting the line of sight regarding the subject and automatically setting an imaging angle set corresponding to the reset line of sight. Processing associated with the shooting angle setting function (hereinafter referred to as shooting angle setting processing) will be described with reference to FIG. The shooting angle setting process is executed under the control of the shooting control unit 25.
  • FIG. 4A, 4B, 4C, and 4D are explanatory diagrams for explaining the imaging angle setting process of the X-ray diagnostic apparatus 1 according to the present embodiment.
  • FIG. 4A is a diagram illustrating a reference user position in the examination room coordinate system.
  • FIG. 4B is an explanatory diagram for describing a shooting angle set corresponding to the reference user position.
  • FIG. 4C is a diagram illustrating the user position after movement from the reference user position in the examination room coordinate system.
  • FIG. 4D is an explanatory diagram for describing a shooting angle set corresponding to the user position after movement.
  • the display center position O is the origin
  • the axis along the major axis of the display unit 32 is the X axis
  • the axis along the minor axis of the display unit 32 is the Y axis
  • the display center position O is displayed.
  • 7 shows an examination room coordinate system in which the axis perpendicular to the display screen of the unit 32 is the Z axis.
  • the predetermined position of the top plate 14 is the origin, the Z axis is parallel to the long axis of the top plate 14, the X axis is parallel to the short axis of the top plate 14, and the Y axis is orthogonal to the top plate 14 surface. Represents the top plate coordinate system.
  • shooting angle set J0 the left-eye shooting angle and the right-eye shooting angle corresponding to the reference line of sight (hereinafter referred to as shooting angle set J0) are set to ⁇ 0L and ⁇ 0R, respectively.
  • the shooting angle set J0 is set by the shooting position setting unit 23 based on the reference line of sight and the reference user parallax. Specifically, when the reference line-of-sight is set via the input unit 20 on the line-of-sight setting image, the imaging position setting unit 23 specifies the line-of-sight angle ⁇ 0 based on the line-of-sight direction included in the reference line of sight.
  • the shooting position setting unit 23 tilts the viewing angle ⁇ 0 to the left-eye shooting angle ( ⁇ / 2) and tilts the viewing angle ⁇ 0 to the right-eye shooting angle ( ⁇ / 2). And identify. Further, the shooting position setting unit 23 specifies the direction of tilting from the line-of-sight angle ⁇ 0 to the left-eye shooting angle and the right-eye shooting angle based on the display orientation included in the reference line of sight.
  • the tilting direction is a direction that is orthogonal to a straight line indicating the line-of-sight direction and parallel to a straight line that represents the left and right of the display direction.
  • the direction tilted from the line-of-sight angle to the left-eye shooting angle is opposite to the direction tilted from the line-of-sight angle to the right-eye shooting angle.
  • the shooting position setting unit 23 can set the left-eye shooting angle ⁇ 0L and the right-eye shooting angle ⁇ 0R based on the reference line of sight and the reference user parallax. Then, under the control of the imaging control unit 25, the left-eye imaging angle ⁇ 0L, the right-eye imaging angle ⁇ 0R, and the left-eye image K0L and the right-eye image K0R (image set K0) respectively corresponding to the (imaging angle set J0) are Collected and stored in the storage unit 28.
  • the display control unit 31 displays the left-eye image K0L and the right-eye image K0R on the display unit 32.
  • the user can recognize a stereoscopic video image related to the subject as seen from the visual line angle ⁇ 0.
  • the shooting control unit 25 executes shooting angle setting processing when a specific gesture operation is performed by the user or when a setting switch is pressed.
  • the photographing angle setting process is executed according to the following procedure. First, the user position P1 (X1, 0, Z1) after movement is specified by the position specifying unit 22.
  • the position specifying unit 22 specifies the movement angle ⁇ 1 (user movement displacement) based on the reference user position P0 and the moved user position P1.
  • the movement angle ⁇ 1 includes information related to the movement direction from the reference user position.
  • the viewing position setting unit 23 identifies the viewing angle ⁇ 1 based on the viewing angle ⁇ 0 corresponding to the image set being displayed on the display unit 32, the display orientation, and the movement angle ⁇ 1.
  • the line-of-sight angle ⁇ 1 is an angle obtained by adding the movement angle ⁇ 1 to the line-of-sight angle ⁇ 0.
  • the reset line of sight is different in the line-of-sight direction from the line of sight before the reset.
  • the shooting position setting unit 23 tilts the viewing angle ⁇ 1 from the viewing angle ⁇ 1 to the left-eye shooting angle ( ⁇ / 2) and the tilting angle from the viewing angle ⁇ 1 to the right-eye shooting angle ( ⁇ / 2). And identify. Then, the shooting position setting unit 23 specifies the direction of tilting from the line-of-sight angle ⁇ 1 to the left-eye shooting angle and the right-eye shooting angle based on the display orientation included in the reset line-of-sight.
  • the shooting position setting unit 23 determines the left-eye shooting angle ⁇ 1L and the right-eye shooting angle ⁇ 1R (hereinafter, referred to as “right-eye shooting angle ⁇ 1R”) based on the line of sight corresponding to the image set displayed on the display unit 32 and the reference user parallax.
  • a shooting angle set J1 Then, according to the control of the imaging control unit 25, the left-eye imaging angle ⁇ 1L, the right-eye imaging angle ⁇ 1R, and the left-eye image K1L and the right-eye image K1R (image set K1) respectively corresponding to the (imaging angle set J1) are Collected and stored in the storage unit 28.
  • the collection operation of the image set K1 by the photographing control unit 25 is automatically executed after the photographing angle set J1 is set. Then, the display control unit 31 displays the left-eye image K1L and the right-eye image K1R on the display unit 32. By visually recognizing the display unit 32 from the reference user position P0, the user can recognize a stereoscopic image as if the stereoscopic target position was viewed from the viewing angle ⁇ 1.
  • the X-ray diagnostic apparatus 1 may include a sound detection unit (not shown) including a sound detection device for detecting a specific word uttered by the user.
  • FIG. 5 is a flowchart showing an example of a series of processes using the X-ray diagnostic apparatus 1 according to this embodiment. (Step S11) Based on the X-ray imaging conditions input by the user via the input unit 20, the X-ray imaging conditions are set by the imaging condition setting unit 24.
  • Step S12 Based on the reference line of sight input by the user via the input unit 20 and the reference user parallax specified by the position specifying unit 22, the shooting position setting unit 23 sets a shooting angle set corresponding to the reference line of sight. .
  • Step S13 When the process proceeds from step S12, it corresponds to the imaging angle set set by the imaging position setting unit 23 according to the control of the imaging control unit 25 under the X-ray imaging conditions set by the imaging condition setting unit 24. An image set is collected by each part. The collected image set data is stored in the storage unit 28 together with information on the reference line of sight, information on the imaging angle set, and the like.
  • step S17 an image set corresponding to the shooting angle set set in step S17 is collected by each unit according to the control of the shooting control unit 25. The collected image set data is stored in the storage unit 28 together with information on the reference line of sight, information on the imaging angle set, and the like.
  • Step S14 When the process proceeds to step S12 and step S13, the display control unit 31 displays the collected image set on the display unit 32 so that the user viewing the display unit 32 at the reference user position can view stereoscopically. The The user can recognize the stereoscopic image corresponding to the reference line of sight by visually recognizing the display unit 32 from the reference user position.
  • the display control unit 31 displays on the display unit 32 the image set read so that the user viewing the display unit 32 at the reference user position can view stereoscopically. Is done.
  • the user can recognize a stereoscopic image as if the stereoscopic target position was viewed from the line-of-sight angle set in step S16.
  • the image selection unit 29 reads an image set corresponding to the reset line of sight from the storage unit 28.
  • the display control unit 31 displays on the display unit 32 an image set read so that a user viewing the display unit 32 at the reference user position can view stereoscopically.
  • the user can recognize a stereoscopic video image corresponding to the line of sight reset in step S16.
  • Step S15 The position specifying unit 22 executes a process for detecting a specific gesture action by the user.
  • the process proceeds to step S16, and the shooting angle setting process is executed.
  • the series of processes by the X-ray diagnostic apparatus 1 is ended.
  • the transition to the shooting angle setting process may be triggered by pressing a setting switch of the input unit 20 or may be triggered by a specific word spoken by the user.
  • Step S16 A shooting angle setting process is executed by the position specifying unit 22 and the shooting position setting unit 23. Then, by the imaging angle setting process, the line of sight with respect to the subject is reset, and an imaging angle set corresponding to the reset line of sight is set.
  • Step S17 If an image set corresponding to the shooting angle set set in step S16 is stored in the storage unit 28, the process proceeds to step S14. On the other hand, if the image set corresponding to the shooting angle set set in step S16 is not stored in the storage unit 28, the process proceeds to step S13.
  • the imaging angle setting process of the X-ray diagnostic apparatus 1 can be repeatedly executed when a specific gesture operation is executed by the user.
  • the image set selection processing by the image selection unit 29 is OFF, the X-ray diagnostic apparatus 1 always collects an image set corresponding to the reset line of sight when the line of sight is reset. Thereby, the user can recognize a stereoscopic video image corresponding to another line of sight in real time.
  • the X-ray diagnostic apparatus 1 can set a reference line of sight according to a user instruction on the line-of-sight setting image displayed on the display unit 32.
  • the user can recognize a stereoscopic video image corresponding to the reference visual line of the subject.
  • This stereoscopic image is an image in which the stereoscopic target position is viewed from the viewing direction corresponding to the reference visual line, and is centered on the stereoscopic target position corresponding to the reference visual line.
  • the top, bottom, left, and right of the stereoscopic video correspond to the display orientation corresponding to the reference line of sight.
  • the shooting angle setting function allows the user to recognize a stereoscopic image obtained by rotating the recognized stereoscopic image simply by moving the face position from the reference user position.
  • the up / down / left / right direction of the stereoscopic image after rotation is the same as the up / down / left / right direction of the stereoscopic image before rotation.
  • the X-ray diagnostic apparatus 1 executes the following processing.
  • the X-ray diagnostic apparatus 1 specifies the user movement displacement from the reference user position to the moved user position.
  • the X-ray diagnostic apparatus 1 resets the line of sight corresponding to the moved user position based on the user movement displacement and the line of sight corresponding to the image set being displayed on the display unit 32.
  • the X-ray diagnostic apparatus 1 sets an imaging angle set (imaging angle for left eye and imaging angle for right eye) corresponding to the reset line of sight based on the reset line of sight.
  • the X-ray diagnostic apparatus 1 collects an image set (left-eye image and right-eye image) corresponding to the imaging angle set (left-eye imaging angle and right-eye imaging angle) and displays it on the display unit 32.
  • the user can recognize a stereoscopic video image corresponding to the reset line of sight by visually recognizing the display unit 32 at the reference user position.
  • the stereoscopic video image corresponding to the reset line of sight is a stereoscopic video image related to the subject as seen from the user position after movement from the stereoscopic target position. That is, when the user wants to view the recognized stereoscopic video image from a different direction, the user can recognize the stereoscopic video image as viewed from the moved position simply by moving the face in the desired direction. .
  • the user can recognize a stereoscopic image related to the subject when the stereoscopic target position is viewed from a plurality of directions by an intuitive operation such as movement of the face, so that the efficiency of the operation and the like by the user is improved.
  • the X-ray diagnostic apparatus 1 does not collect a plurality of image sets corresponding to a plurality of lines of sight, but collects only an image set corresponding to the reset line of sight. Therefore, the present X-ray diagnostic apparatus 1 can also suppress the exposure dose. That is, according to the X-ray diagnostic apparatus 1 having the imaging angle setting function, it is possible to improve work efficiency while suppressing the exposure dose in diagnosis, treatment, and the like using the image stereoscopic technique.
  • the image selection unit 29 selects an image set corresponding to the reset line of sight from the storage unit 28, and the display unit 32. Is displayed. Therefore, the user can recognize a stereoscopic video image corresponding to the reset line of sight without newly photographing. Therefore, the X-ray diagnostic apparatus 1 can suppress the exposure dose.
  • the shooting angle setting process may be automatically and repeatedly executed under the control of the shooting control unit 25.
  • the imaging control unit 25 executes imaging angle setting processing at predetermined time intervals. The predetermined time interval is set in advance by the user, and can be appropriately changed according to the user instruction. Whether the shooting angle setting process is automatically executed or according to a user instruction can be appropriately changed according to the user instruction.
  • the shooting angle setting process can be automatically executed, the user does not need to perform a specific gesture operation, a specific word generation, and an operation of the input unit 20, thereby improving work efficiency compared to manual operation. Can do.
  • the shooting angle setting process by the shooting control unit 25 may not be executed. Thereby, it is possible to avoid execution of the shooting angle setting process that is not intended by the user.
  • the line-of-sight angle ⁇ 1 corresponding to the line of sight after movement is described as an angle obtained by adding the movement angle ⁇ 1 to the line-of-sight angle ⁇ 0 corresponding to the line of sight before movement.
  • the user can recognize a stereoscopic image as if the stereoscopic target position was viewed from the position after the movement only by moving the face from the reference position. That is, since the movement angle from the reference position with respect to the display center position and the difference in the line-of-sight angle before and after the movement correspond one-to-one, the user can intuitively change the line of sight of the subject.
  • the line-of-sight angle ⁇ 1 may be an angle obtained by adding the line-of-sight angle ⁇ 0 to an angle obtained by multiplying the movement angle ⁇ 1 by a coefficient ⁇ set in advance by the user.
  • the user movement displacement is the user movement angle from the reference user position with respect to the display center position O. That is, the movement displacement of the user is specified according to the movement operation of the face by the user. However, the user may not be able to move from the reference position during the procedure. Therefore, the user movement displacement does not have to be based on the face movement operation by the user.
  • the user movement displacement may be an operation of tilting the user's face, an operation of changing the orientation of the user's face, or the like.
  • the position specifying unit 22 specifies the tilt angle and direction of the user's face from the reference user position. Specifically, the position specifying unit 22 specifies the position of the left eye pupil and the position of the right eye pupil of the user. Then, the position specifying unit 22 specifies an angle (hereinafter referred to as an inclination angle) of a line connecting the pupil of the left eye and the pupil of the right eye when the line is at the reference user position and after the face is tilted. . Then, the shooting position setting unit 23 resets the line of sight based on the line of sight and the tilt angle corresponding to the stereoscopic image being displayed.
  • an angle hereinafter referred to as an inclination angle
  • a method for resetting the line of sight according to the tilt angle is set in advance by the user. For example, when the tilt angle is 10 degrees to the right, the shooting position setting unit 23 resets the line of sight corresponding to the stereoscopic video image being displayed to a line of sight rotated 10 degrees to the right in the horizontal direction.
  • the position specifying unit 22 determines the orientation of the user's face based on the movement direction of the facial feature point and the movement distance of the feature point per unit time. Specify how quickly the face changes direction. Then, the shooting position setting unit 23 resets the line of sight based on the line of sight corresponding to the displayed stereoscopic video, the face direction, and the speed at which the face direction is changed. Specifically, for example, the shooting position setting unit 23 determines the direction of changing the line of sight based on the line of sight direction and the face direction. Then, the angle for changing the line of sight is determined based on the speed at which the direction of the face is changed.
  • the shooting position setting unit 23 resets the shooting angle set corresponding to the reset line of sight. Then, under the control of the imaging control unit 25, an image set corresponding to the reset imaging angle set is collected and displayed on the display unit 32. The user can recognize a stereoscopic video image corresponding to the reset line of sight by visually recognizing the display unit 32 at the reference user position. Through the above processing, the imaging position setting unit 23 resets the line of sight based on the operation of tilting the user's face or the operation of changing the orientation of the user's face.
  • Modification 1 An X-ray diagnostic apparatus 1 according to Modification 1 will be described.
  • the user visually recognizes the display unit 32 at the reference user position. This is because the position at which the user visually recognizes the display unit 32 is substantially fixed when the user has a lot of work at a predetermined position (reference user position).
  • the user wants to view the currently recognized stereoscopic video image by rotating it in a specific direction for a short time.
  • the user can rotate the stereoscopic video image by moving the X-ray diagnostic apparatus 1 in a specific direction from the reference user position, for example.
  • the user can recognize the stereoscopic video image after the rotation by viewing the display unit 32 at the reference user position.
  • the user needs to move the face in the direction opposite to the specific direction described above from the reference user position. This is because the rotation of the stereoscopic video is performed according to the user movement displacement from the reference user position. Therefore, when the user wants to rotate the stereoscopic video image in a specific direction and watch it for a short time to return to the original stereoscopic video image, the user needs to make two reciprocal movements starting from the reference user position. Even when it is desired to rotate a stereoscopic image in a different direction for a short time and view it, if two reciprocal movements are required, the work efficiency may be reduced.
  • the X-ray diagnostic apparatus 1 according to the first modification is intended to solve the above-described problems.
  • the X-ray diagnostic apparatus 1 according to Modification 1 can change the reference user position. That is, the user can recognize a stereoscopic video image in which the stereoscopic target position is viewed from the user position after movement at the user position after movement. Then, when it is desired to return to the stereoscopic video image before the movement, it is only necessary to return the face to the user position before the movement. As a result, even when it is desired to view a stereoscopic video image from a different direction for a short time, only one reciprocal face movement is required.
  • the X-ray diagnostic apparatus 1 according to the modified example 1 improves work efficiency when it is desired to view a stereoscopic image from a different direction for a short time. can do.
  • the change instruction may be switched according to the gesture operation of the user or the utterance of a specific word.
  • Modification 2 An X-ray diagnostic apparatus 1 according to Modification 2 will be described.
  • the user when the user wants to view the recognized stereoscopic image from a different direction, the user simply moves the face in the desired direction and looks from the moved position. 3D images can be recognized.
  • the vertical and horizontal directions of the stereoscopic video after resetting the line of sight are the same as the vertical and horizontal directions of the stereoscopic video before resetting the line of sight. Therefore, the vertical and horizontal directions of the stereoscopic video recognized by the user are always the same.
  • the user wants to view the recognized stereoscopic video image in an inclined manner (changes the vertical and horizontal directions of the video image).
  • the user wants the catheter moving direction to correspond to the top and bottom of the image during the catheter procedure, the user recognizes the stereoscopic image that is currently recognized, and the image is displayed according to the moving direction of the catheter without changing the line-of-sight direction. Sometimes you want to tilt.
  • the X-ray diagnostic apparatus 1 according to the present embodiment is used, this corresponds to resetting the line-of-sight direction among the lines of sight. However, it does not support resetting the display orientation.
  • the X-ray diagnostic apparatus 1 according to Modification 2 is intended to solve the above-described problems. Specifically, the X-ray diagnostic apparatus 1 according to the modified example 2 can reset the display orientation according to the angle at which the user's face is inclined. Since the display orientation can be reset, the recognized stereoscopic image can be tilted according to the angle at which the user's face is tilted.
  • the position specifying unit 22 specifies the tilt angle of the user's face from the reference user position. Specifically, the position specifying unit 22 specifies the position of the left eye pupil and the position of the right eye pupil of the user. Then, the position specifying unit 22 specifies an angle (hereinafter referred to as an inclination angle) of a line connecting the pupil of the left eye and the pupil of the right eye when the line is at the reference user position and after the face is tilted. .
  • the imaging position setting unit 23 resets the line of sight based on the line of sight and the tilt angle corresponding to the image set currently displayed on the display unit 32. Specifically, the shooting position setting unit 23 resets the display direction according to the tilt angle.
  • the shooting position setting unit 23 resets the shooting angle set based on the reset line of sight and the reference user parallax.
  • an image set corresponding to the reset imaging angle set is collected and displayed on the display unit 32.
  • the user can recognize the stereoscopic image corresponding to the reset line of sight by visually recognizing the display unit 32 at the reference user position.
  • the stereoscopic image corresponding to the reset line of sight is an image obtained by tilting the stereoscopic image corresponding to the line of sight before being reset.
  • the tilt direction corresponds to the direction in which the user tilts the face. Therefore, in addition to the effects of the X-ray diagnostic apparatus 1 according to the embodiment, the X-ray diagnostic apparatus 1 according to the modified example 2 can realize an improvement in work efficiency when it is desired to recognize a stereoscopic image by tilting.
  • Modification 3 An X-ray diagnostic apparatus 1 according to Modification 3 will be described.
  • the X-ray diagnostic apparatus 1 according to the present embodiment the X-ray diagnostic apparatus 1 according to Modification Example 1, and the X-ray diagnostic apparatus 1 according to Modification Example 2, the reset line of sight depends on the user movement displacement. .
  • the line-of-sight direction, the display direction, etc., in which the subject needs to be seen may be determined in advance depending on the type of the part, the type of procedure, and the like.
  • the X-ray diagnostic apparatus 1 when the user wants to change the line of sight corresponding to the stereoscopic image being displayed to a predetermined line of sight, the user cares about the face movement direction and the face movement amount. It is necessary to. If the movement amount is large, the user cannot recognize a stereoscopic video image in a predetermined direction. Therefore, in order to obtain a stereoscopic video image corresponding to a predetermined line of sight, the user may have to move the face repeatedly. However, if the user needs to move repeatedly, the user's work efficiency may be reduced.
  • the X-ray diagnostic apparatus 1 according to Modification 3 is intended to solve the above-described problems.
  • the user can set a plurality of lines of sight by operating the line-of-sight setting image via the input unit 20.
  • a method for setting a plurality of lines of sight on the line-of-sight setting image there are a manual setting method and a semi-automatic setting method.
  • a plurality of lines of sight are set one by one in accordance with a user instruction.
  • the method for setting the line of sight according to the user instruction is as described in the method for setting the reference line of sight in the X-ray diagnostic apparatus 1 according to the present embodiment.
  • the reference line of sight among the plurality of lines of sight is set according to a user instruction.
  • the other line of sight is set according to the reference line of sight and a preset method.
  • a plurality of lines of sight are set at predetermined angular intervals along the vertical direction of the line-of-sight setting image when the reference line of sight is set.
  • a plurality of lines of sight are set at predetermined angular intervals along the vertical direction of the line-of-sight setting image when the reference line of sight is set. Furthermore, the above two methods may be combined.
  • the position specifying unit 22 specifies the line-of-sight switching operation by the user.
  • the line-of-sight switching operation is an operation for switching the line of sight corresponding to the image set displayed on the display unit 32 to another line of sight set in advance. Therefore, after the line-of-sight switching operation, an image set corresponding to another line of sight is displayed on the display unit 32.
  • the user can recognize a stereoscopic video image corresponding to another line of sight by visually recognizing the display unit 32 at the reference user position.
  • the line-of-sight switching operation by the user is, for example, movement of the user's face and a gesture. Note that the line-of-sight switching operation can be replaced by the utterance of a specific word by the user.
  • the position specifying unit 22 specifies user movement displacement. Further, the position specifying unit 22 specifies the gesture operation of the user. Gesture operations include, for example, tilting hands, waving hands, and pointing fingers.
  • the line-of-sight switching operation can be set according to a user instruction via the input unit 20.
  • the modes for specifying the line-of-sight switching operation by the position specifying unit 22 include a continuous mode and a manual mode. These modes can be appropriately changed in accordance with user instructions.
  • the position specifying unit 22 specifies whether or not the line-of-sight switching operation has been executed by the user.
  • the specified time interval can be appropriately changed according to the user instruction.
  • the line-of-sight switching operation is an operation that the user does not normally perform because the line-of-sight switching not intended by the user does not occur, and an operation that does not burden the user during the procedure is preferable.
  • the position specifying unit 22 may specify the line-of-sight switching operation according to the speed of the gesture operation, the size of the operation, and the duration of the operation. .
  • the position specifying unit 22 specifies the line-of-sight switching operation when a switch (hereinafter referred to as a transition switch) for shifting to the line-of-sight switching operation specifying mode by the position specifying unit 22 is pressed.
  • a switch hereinafter referred to as a transition switch
  • the transition switch is triggered, but the transition to the specific mode of the line-of-sight switching operation by the position identifying unit 22 is triggered even when the user detects the utterance of a specific word, gesture motion, or the like. Good.
  • the user performs a line-of-sight switching operation after pressing the transition switch.
  • FIGS. 6 and 7 are explanatory diagrams for explaining the line-of-sight switching operation in the X-ray diagnostic apparatus 1 according to Modification 3.
  • FIG. FIG. 6 is a diagram illustrating a plurality of lines of sight set with respect to the stereoscopic target position.
  • FIG. 7 corresponds to FIG. 6 and shows the screen transition of the display unit 32 during the line-of-sight switching operation.
  • the user's line-of-sight switching operation and an image displayed on the display unit 32 after the line-of-sight switching operation will be described with reference to FIGS. 6 and 7.
  • P indicates a cylindrical tube simulating a subject.
  • O indicates a three-dimensional target position.
  • C indicates the line-of-sight direction of the reference line-of-sight with respect to the stereoscopic target position.
  • the upward direction of the image corresponds to the + X direction
  • the downward direction of the image corresponds to the ⁇ X direction
  • the right direction of the image corresponds to + Z
  • the left direction of the image corresponds to the ⁇ Z direction.
  • L1 to L3, R1 to R3, U1 to U2, and S1 to S2 respectively indicate a plurality of lines of sight with respect to the stereoscopic target position.
  • P1 to P4 indicate images related to the user taken by the camera included in the position specifying unit 22.
  • P1 shows an image of the user viewing the display unit 32 at the reference user position.
  • P2, P3, and P4 show images related to the user after performing the line-of-sight switching operation E, operation F, and operation G, respectively.
  • the line-of-sight switching operations E, F, and G are operations in which the user turns to the right, to the left, and to the top, respectively.
  • the stereoscopic video image c is a stereoscopic video image related to the subject P as if the stereoscopic target position O was viewed from the visual line direction corresponding to the reference visual line C.
  • the shooting position setting unit 23 changes the line of sight from the reference line of sight C to the line of sight L1.
  • the line-of-sight switching operation E is an operation in which the user turns to the right. This operation means that the user wants to rotate the stereoscopic image c to the right, that is, the user wants to see the stereoscopic target position O from the left direction. Therefore, the line of sight is changed from the reference line of sight C to the line of sight L1.
  • image control data corresponding to the line of sight L ⁇ b> 1 is read from the storage unit 28 under the control of the imaging control unit 25.
  • the image set data corresponding to the line of sight L1 is not stored in the storage unit 28, the data of the image set corresponding to the line of sight L1 is collected by each unit according to the control of the imaging control unit 25.
  • an image set corresponding to the line of sight L1 is displayed on the display unit 32.
  • the user can recognize the stereoscopic image l1 corresponding to the line of sight L1 by visually recognizing the display unit 32 at the reference user position.
  • the stereoscopic video image 11 is a stereoscopic video image of the subject as seen from the stereoscopic target position O from the direction of the line of sight L1.
  • the line-of-sight switching operation F is an operation in which the user faces upward. This operation means that the user wants to rotate the stereoscopic image c upward, that is, the user wants to see the stereoscopic target position O from the lower direction. Therefore, the line of sight is changed from the reference line of sight C to the line of sight S1. The user can recognize the stereoscopic video s1 corresponding to the line of sight S1.
  • the line-of-sight switching operation G is an operation in which the user turns to the left. This operation means that the user wants to rotate the stereoscopic image c to the left, that is, the user wants to see the stereoscopic target position O from the right direction. Therefore, the line of sight is changed from the reference line of sight C to the line of sight R1. The user can recognize a stereoscopic video image r1 of the subject as seen from the stereoscopic target position O from the direction of the visual line R1.
  • the imaging position setting unit 23 changes the line of sight from the line of sight L1 to the line of sight L2. The user can recognize a stereoscopic video image corresponding to the line of sight L2.
  • the imaging position setting unit 23 changes the line of sight from the reference line of sight to the line of sight L1 according to the line-of-sight switching operation E.
  • the imaging position setting unit 23 may change the line of sight from the reference line of sight to the line of sight L2 or L3 according to the size, speed, and duration of the line-of-sight switching operation.
  • the imaging position setting unit 23 determines the direction of switching the line of sight according to the type of line of sight switching operation, and sets the amount of switching the line of sight according to at least one of the size, speed, and duration of the line of sight switching operation. It may be determined.
  • the X-ray diagnostic apparatus 1 can switch the line of sight corresponding to the image set being displayed to another line of sight.
  • the other line of sight is one of a plurality of lines of sight set in advance by the user.
  • the X-ray diagnostic apparatus 1 identifies the other line of sight described above from a plurality of lines of sight set in advance by the user according to the line of sight corresponding to the displayed image set and the specified line of sight switching operation. To do.
  • the user can recognize a stereoscopic video image corresponding to another line of sight.
  • the user simply moves the face and displays the line-of-sight corresponding to the recognized stereoscopic video image in advance. It can reset to one of the set several eyes
  • a plurality of image sets respectively corresponding to a plurality of lines of sight are not collected in advance, and an image set corresponding to a line of sight reset according to the user movement displacement is collected each time. Further, if an image set corresponding to the reset line of sight has already been collected, it can be set not to collect again. Therefore, the X diagnostic apparatus 1 according to the modified example 3 can realize improvement in work efficiency while suppressing the exposure dose in diagnosis, treatment, etc. on the subject.
  • the line-of-sight direction can be reset among the lines of sight of the subject according to the user movement displacement, but there is no description that the display direction can be reset.
  • Modification 2 does not indicate that the line-of-sight direction can be reset among the lines of sight of the subject according to the user movement displacement, but describes that the display orientation can be reset.
  • the X-ray diagnostic apparatus 1 can reset the line-of-sight direction and the display direction among the lines of sight with respect to the subject according to the user movement displacement.
  • an object of the present invention is to realize an improvement in work efficiency while suppressing an exposure dose in diagnosis, treatment, etc. on a subject.
  • the embodiment has been described by taking stereoscopic vision as an example, but the present invention resets the imaging position in accordance with the position of the user's face or the displacement of the face, and collects X-ray images corresponding to the reset imaging position. There is in point to do. Therefore, the scope of the present invention is not limited to stereoscopic viewing.

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PCT/JP2014/053532 2013-02-14 2014-02-14 Ｘ線診断装置 WO2014126219A1 (ja)

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US9968320B2 (en) 2018-05-15
JP6222835B2 (ja) 2017-11-01
US20150342548A1 (en) 2015-12-03

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